Carbureter.



JAI/:Es If. RYAN, or INDIANAPOLIS, INDIANA.

CARBURETER.

Specification of Letters Patent. Patented Sept. 20,1910.

Application tiled January 25, 1909. Serial No. 474,180.

Be it known that I, JAMES l. ltraN, a citizen of the United States, residing at Indianapolis, in the county ,of Marion and State of Indiana, have invented certain new and useful Improvements in Carbureteis;y

and I do declare the following to be afull, clear, andexact description of the invention, reference being had to the accompanying drawings, and to the letters and figures of .reference marked thereonhwhieh form a part of this specification.

rlhis invention relates to apparatus of the class commonly known as carbureters, and the type usually employed for mixing air and gasolene for charging explosive engines, the invention having reference par-l ticularly to a' compound carbnreter that isV adapted to operate asa isimple carbureter when the engine is starting or working at slow speeds,aiid automatically operates as `a compound carburetor when the speed inj creases vto higher speeds.

The object of, the invention is to provide an improved carbureter that will be adapted to supply an explosive engine with carbureted air undervarying 'speeds and without requiring particular attention of the attendant in attaining the results desired, another object being'to provide a compound carburete'r that will be adapted to be constructed cheaply, and be durable, reliable and ecoiioniical iii'use. u f

With the above-mentioned `and other objects in View `the invention consists in a compound carburetor comprising a primary and anV auxiliary caiburetei', one having'a primary feeder andniixer, and the other having an auxiliary feeder and mixer, constructed and connected operatively together innovel manner, and a reservoir for supplying both of the feeders and mixers with liquid hydro-carbon; andl the invention consists further in the novel parts and iii`the combinations and arrangements ofparts as hereinafterparticularly described and then defined in the accompanying claims.

Referring to the drawings Figure 1 is a vertical central-sectional View of the improved carbureter-g Fig-2, a vert ical seetional view etrlhe plane of the line A A in Fig.

1; Fig. tf, a fragmentary sectional` view showin i 'parts of Fig. I1 on an enlarged 'scale; t-ng. 4T, a horizontal sectional view approximately on `the line B B .in Fig. 1;

Fig. 5, aT fragmentary vertical sectional View struction of the primary feeder and mixer of the carbureter; .Fig. a fragmentary vertical sectional view showing parts of Fig. 1. on an enlarged scale; and Fig. 7 an eleva` tion of the inner end of the adjusting nutl of the. spring of the air inlet valve of the car-y bureter.

Similar reference characters in the different figures of the drawings indicate like parts or features of construction.

The improved carburetor 'as preferably constructed is made of suitable east metal,

so that the shelll or principal body parts may be conveniently made integrally or all of one piece,'the primary carbureter coinprising a ii'iixei' body 1 which is circular in eross-sectioii and has `a contracted throat 1', the body beingl open at its upper eiidvvand` partially closed at its lower end by a bridge 2, leaving air passages 8 and 3 at the vsides of the bridge. i

The auxiliary carbiiretcr has a mixer body 4 adjacent. the body 1 and it` has a bridge 5 extending across its lower end, leaving air passages and 6 at the sides of the bridge, the bridge being in aliiienient with the bridge 2. A nozzle 7 extends from showing parts of Fig. l. onan enlarged scale and includlnglmodifications 1n the conthe bridge Q into the body 1 approximately ably screwed in, so as to be removable in order that ditl'erent sizes of Anozzles'niay be substituted therefor it! desired. A casing 9 extends from the body 4 aiou'nd the body 1, so as to forni a water chamber around the mixer body l, the chamber having a bottom Si extending from the easing to the body 1. and also to the body 4, the casingbeing joined at its top to the vall of the body 1f and also to the 'all of the body 4'. A slibstantially globular shaped valve case 10 is joined to the top'of the mixer body` 1, and a valve case 11 is ioiiied to the top of Athe mixer body 4- and also to the valve case 10 i at one side thereof, there being a neck-12 extending from the valve case l0'suitably` lt will be seen from the foregoing that:

air may pass through the mixer body 1 and lll? out, through the valve case 10 and the .neck

12, and also thatnii' may pass through the suitable cover thereon. Preferably the bridges 2 and 5 and has communication with r21. formed on the end of a valve stem 20 tlianilie supply of i. through --the adjusting nut 26, the outer en'd is connectedA at its lower portion to the lower port-ion of the walls of the mixer body by a plug 13. The bridge 5 has a packing guide 29. A valve 33 is normally seated on; j the .valve-seat 25 and has a valve-stem mixer body 4 and through the valve cases l1 and 10 and thence out through the neck 12, it being designed to carburate the air in its passage through the; channels abovementioned.

A reservoir body 13 having a bottom 13 1 and casing 9 by means ,of a web 14 which is in"alinement with tire/ bridge 2. The reservoir body 13 4is cylindrical and has a bridge 2 has a screw plug 16 in the under side thereof opposite` to the lower end of the nozzle 7, so that when the plug is removed the nozzle may be removed. A straight duct 17 extends from reservoir through the the nozzles 7 and 8 to supply them with gasolene, the duct being preferably forlneds` by drilling and then closed at its outer end box'lf) 'suitably connected theretoat its under side in which is a valve stem 20' that is suitably screwed into the packing box and has a feed valve 21 thereon extending into the nozzle 8 and adapted to close the orifice of the nozzle, orio partially open it for feeding the gasolene, there heilig a` packing nut 22 on tin` packing` box. :The nozzle 7 is somewhat smaller in diameter inghas a smaller orifice than that, of the nozzle 8, the relative sizes of the orifices of thernozzl'es being predetermined, but in somecases the nozzle 7 may be provided with ajffeed valve that is screwed" into a packing box 19 with which the bridge 2 is provided in lieu of the plug 16, the packing boxfhavii'xg a pack# ing nut 22 thereon, as shown in Fig. 5, so gasolene to the nozzle 7 may be regulated. y g. One side of the valve 10 has a valve seatring 23 screwed therein, and the ring is provided with arms 23 which support a centrally arranged valve-guide 24, the inner side-of the ring having a valve-seat 25 formed thereon. An annular adjusting nut 2G is screwed onto the guide 24-and has longitudinal grooves 27 formed in the exterior face thereofC -n' arn'1'28` extends from 'the valve cairlgolugqyer.,theguide 24 and supports a vertical guide 29 in which a latch-boltl 30 is movably, mounted, so as to normally hold the adjusting nut 26 from turning by entering' one of the grooves 27, the latch-bolt being engaged by a spring 31 on its top that is seated against an adjusting screw'32 inserted into-the top of the.

which extends through the guide 24 and also of the stem having a head 35 suitablyy secured thereto, and-"a spring '36 is seated against the'head and also against the adjacent nut 26, normally holding the valve to its seat, but permitting the valve yto be opened inward by suction of the, en-

gine piston, so that `air .may pass between lthe arms 23 and past the valve intoV4 the valve case .10, and thence out through the 38 normally resting on the valve seat and closing communication between the interior of the body 4 and the case 11, the valve having a stem 39 thereon. A cap 4Q is screwed into the top of the case 11 and has a hollow ,valve guide 41 screwed into it, so asto be adjustable vertically, the stem 39 extending movably through the guide, and a lock-,nut 42 is screwed onto the guide 41 and engages the cap 40 to preventaccidental movement of the guide, there being a spring 43 on the stem 39 and seated against the lower or inner end of the guidel 4l and also against the valve 38 to normally hold the valve to its seat, but'permitting the valve to rise or open inward into the case 11 by suction of the engine piston. The tension of the spring 43 as will be seen may be adjusted by means of the guide 41, so as to permit the valve 38 i to open in accordance with predetermined y design.

A shaft 44.is mounted rotatively in the neck 12 and is provided at one end with an operating lever 45, a throttle valve 46 attached to the shaft within the. neck,-'so as to regulate the "mixture for the engine or engines. l

The bottom 13 of the reservoir has l,a valvt-case 47 `formed thereon with whichfa being f supply pipe 48 is to be connected, there being a suitable check-valve 49 provided that operatesv in the valve case, seas to close' the valve-case and the reservoir, the/,valve '.110 communication which is provided between` having'a stem 50 with which a suitable float 51 is adapted to coperate to`closethe valve 49 when the reservoir contains a sufficient quantity of gasolene, the float ,rising with the gasolene to close the valve, land the valve may be opened at any time. by means of a plunger 52 that is mou'ntedgn the cover 15 of the reservoir above the Lem 50, to be operated by on the coverand ing rod54 n The water chamber'fformed-by theeislng 9 and the otherwallshereinbefore'ffiescribed may be supplied with circulating-water by connecting an inlet pipe 55 and an outlet provided with ian opgga" a lever 53 suitably fulcrumed.

lak

pipe 56 tothe casing 9,.so that thefmixerbody 1 rmay not become heated sufficiently tov 'heat the reservoir.

' be fed only from the nozzle 7 and mixed with the air that enters the passages 3 and 3', and if desired the spring 3G may be so adjusted as to permit air to be admitted by the Valve 33. When the speed increases and the suction increases the valve 38 will open,

so that A,the gasolene will be fed also from.

the nozzle 8 and be mixed with the air eiitering through the passages (3 and (3', the feed valve 2l having been previously adjusted to fulfil the requirements, so that after proper adjustments have been made for the use of theauxiliary earbureteino further attention will be required. lVheii the Speed of the engine becomes again reduced the auxiliary carbureter will 'dist-,oie tiniie to act, as will be apparent.

Having thus described the invention, what is claimed as Beweis-e 1. In a carbiireter, the combination of a mixer body, a feed nozzle in the mixer body, a valve-case on the mixer body,'a valve-seat ring secured in one side of the valve-case, a valve-guide on the ring, an adjusting-nut screwed onto the valve-guide and having longitudinal grooves in the outer side thereof, an arm'on the valve-case, a guide on the arm, a latch bolt movable in the guide into orout of-either one of the grooves, a spring normally forcing the latch-bolt into contact with the adjusting-nut, an air-inlet valve seated on the inner side of the ring and having a valve-stein thereon that extends through the valve-guide and the adjustingiiiit, the outer end ofthe valve-stein having a head thereon, and a spring seated against the head and also-against the adjusting-nut.

2. In a carburetor, the combination of a primary mixer body that is open at its lower and upper ends, an auxiliary mixer body that is open at its lower end, a reservoir connected with the primary. mixer body, a bridge in the lower end of the primary mixer body and. havin a duct therein that/extends straight through the side of the reservoir, a nozzle on the bridge, a bridge in the lower end ofthe auxiliary mixer body in alinement With the first-described bridge and having a duct 'therein communicating with the firstdescribed duct, a nozzle on the bridge in the auxiliary mixer body, an air-inlet valve-case on the primary mixer body and having` an outlet, a `valve-case on the auxiliary niixei body and joined to the airinlet valve-ease, a loaded valve seated on'the upper end of the auxiliary mixer body, a valve-seat ring secured in the side of the air-inlet valve-case, a valve-guide on the ring, an air-inlet valve seated on the inner side of the ring and hai"- ing a stem thereon extending through the valve-guide, the stein having a head thereon,

and a spring engaging the head and holding the air-inlet valve removably against'. the riiig.

3. l'Ii a eiirbiii'eter, the combination of a4 primary mixer body am] an auxiliary mixer body having eaeh a bridge in its lower end,

there beine airiiissiwes at o i iosite sides of h 1'* theI bridges and communicating duets in the bridges, a easing extending from the anxil-V iary mixer body about the primary mixer body at a distance therefrom and having apertures iii the upper and lower portionsI thereof, the easing being connected at its top to the upper portion and at its bottom to the lower portion of the primary mixer body at the top of the bridge therein, a reseruvoir body connected at the lower portion thereof to the wall of the 1 riinary mixer body and also to the casing, there being a duet extending through the 4walls ot the reservoirfbody and the primary mixer body to the d iict in the bridge that is in the pri mary mixer body, all of said ducts being iii aliiiemeiit, a nozzle upon the bridge in the primary mixer body, a nozzle upon the bridge in the auxiliary mixer body, a paeltiiig-box on the underside of the bridge of the auxilary mixer body, a val\'e-stein niorable in the paeking'box and extending therethrough and. through one of the eonnniiiiieating duets to close or open thel nozzle on said last-mentioned bridge, two communicating valve-cases onthe primary and auxiliary mixer bodies respectively and having an outlet, a loaded valve seated removably on the auxiliary mixer body in one of the valve cases, a valve-seat ring secured iii the si'de of the other one of the valve-eases, and an airiiilet valve seated removably against the ring and springpressed thereto.

In testimony whereof, l. attix my signature in presence of two witnesses.

JAMES P. RYAN. vWitnesses z E. T. Simms, K. R. VVonniiLL. 

